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50
51#include "layoutitem.h"
52
53#include <QGradient>
54#include <QGraphicsLinearLayout>
55#include <QPainter>
56
57//! [0]
58LayoutItem::LayoutItem(QGraphicsItem *parent/* = 0*/)
59 : QGraphicsLayoutItem(), QGraphicsItem(parent)
60{
61 m_pix = new QPixmap(QLatin1String(":/images/block.png"));
62 setGraphicsItem(this);
63}
64//! [0]
65
66LayoutItem::~LayoutItem()
67{
68 delete m_pix;
69}
70
71//! [1]
72void LayoutItem::paint(QPainter *painter,
73 const QStyleOptionGraphicsItem *option, QWidget *widget /*= 0*/)
74{
75 Q_UNUSED(widget);
76 Q_UNUSED(option);
77
78 QRectF frame(QPointF(0,0), geometry().size());
79 qreal w = m_pix->width();
80 qreal h = m_pix->height();
81 QGradientStops stops;
82//! [1]
83
84//! [2]
85 // paint a background rect (with gradient)
86 QLinearGradient gradient(frame.topLeft(), frame.topLeft() + QPointF(200,200));
87 stops << QGradientStop(0.0, QColor(60, 60, 60));
88 stops << QGradientStop(frame.height() / 2 / frame.height(), QColor(102, 176, 54));
89
90 //stops << QGradientStop(((frame.height() + h)/2 )/frame.height(), QColor(157, 195, 55));
91 stops << QGradientStop(1.0, QColor(215, 215, 215));
92 gradient.setStops(stops);
93 painter->setBrush(QBrush(gradient));
94 painter->drawRoundedRect(frame, 10.0, 10.0);
95
96 // paint a rect around the pixmap (with gradient)
97 QPointF pixpos = frame.center() - (QPointF(w, h) / 2);
98 QRectF innerFrame(pixpos, QSizeF(w, h));
99 innerFrame.adjust(-4, -4, 4, 4);
100 gradient.setStart(innerFrame.topLeft());
101 gradient.setFinalStop(innerFrame.bottomRight());
102 stops.clear();
103 stops << QGradientStop(0.0, QColor(215, 255, 200));
104 stops << QGradientStop(0.5, QColor(102, 176, 54));
105 stops << QGradientStop(1.0, QColor(0, 0, 0));
106 gradient.setStops(stops);
107 painter->setBrush(QBrush(gradient));
108 painter->drawRoundedRect(innerFrame, 10.0, 10.0);
109 painter->drawPixmap(pixpos, *m_pix);
110}
111//! [2]
112
113//! [3]
114QRectF LayoutItem::boundingRect() const
115{
116 return QRectF(QPointF(0,0), geometry().size());
117}
118//! [3]
119
120//! [4]
121void LayoutItem::setGeometry(const QRectF &geom)
122{
123 prepareGeometryChange();
124 QGraphicsLayoutItem::setGeometry(geom);
125 setPos(geom.topLeft());
126}
127//! [4]
128
129//! [5]
130QSizeF LayoutItem::sizeHint(Qt::SizeHint which, const QSizeF &constraint) const
131{
132 switch (which) {
133 case Qt::MinimumSize:
134 case Qt::PreferredSize:
135 // Do not allow a size smaller than the pixmap with two frames around it.
136 return m_pix->size() + QSize(12, 12);
137 case Qt::MaximumSize:
138 return QSizeF(1000,1000);
139 default:
140 break;
141 }
142 return constraint;
143}
144//! [5]
145